Schropp Power Package JLT & Custom Tune for Mustang Shelby GT350 2015–2020

The Schropp Power Package SF-GT350 combines the JLT Cold Air Intake with a Schropp Custom Tune specifically calibrated for the intake system and your 2015–2020 Ford Mustang Shelby GT350 5.2 V8.

The JLT Cold Air Intake CAI-GT350-15 uses a significantly enlarged intake design and requires modified engine calibration. Instead of simply supplying the JLT intake as a standalone component, Schropp combines the hardware with the required custom calibration to create a complete performance package.

JLT Cold Air Intake for the Shelby GT350

The JLT intake system was developed specifically for the Shelby GT350's 5.2 litre V8. At its heart is a large black textured rotomolded intake tube designed to provide an unrestricted path for incoming air.

The tube measures 120 mm at the MAF and 4.5 inches at the throttle body side. The design eliminates restrictive choke points and accordion-style sections found in the factory intake system.

The system uses a large red oiled high-flow air filter with a 5-inch opening. A purpose-designed rotomolded heat shield helps isolate the intake area from engine-bay heat.

Why is a Custom Tune included?

The JLT CAI-GT350-15 significantly changes the intake system, including the area surrounding the mass airflow sensor. JLT specifies that an ECU tune is required with this Cold Air Intake.

This is why Schropp supplies more than just the intake hardware. We create a Schropp Custom Tune based on your individual vehicle data and existing modifications.

The calibration adapts the engine management to the modified intake system and provides more responsive engine behaviour. Adjustment of the factory speed limiter can also be incorporated into the Custom Tune.

With or without SCT X4 – choose the package you need

The Power Package is available in two versions:

incl. SCT X4
If you do not already own a suitable programmer, choose the complete package including the SCT X4. The X4 is used to transfer the Schropp Custom Tune to the vehicle. During the first programming process, the factory calibration is saved, allowing the vehicle to be returned to its stock calibration later.

use existing SCT X4
Already own a suitable SCT X4? Choose the package without an additional programmer. Your existing device must be compatible with your vehicle and unmarried. Please update the SCT X4 to the latest software version before ordering. If your device is still married to another vehicle, please contact us before ordering.

How to receive your Schropp Custom Tune

The SCT X4 is initially supplied without the Custom Tune file. After receiving the device, use the “Vehicle Info” menu to read your Mustang's ECU Strategy.

To create your individual tune, please email us the following information:

• Vehicle Identification Number (VIN)
• ECU Strategy
• existing vehicle and engine modifications
• rear tyre size
• modified final drive ratio, if applicable
• fuel octane used

Using this information, we create the appropriate Schropp Custom Tune and send the tune file to you by email. The file is then transferred to the SCT X4 using the SCT Device Updater before being programmed into the vehicle.

Depending on the ECU and software version, creation of an individual Custom Tune may take several days.

Fuel requirement

The Schropp Custom Tune supplied with this Power Package is calibrated for Super Plus / minimum 98 RON fuel. The specified fuel quality must be used while operating the vehicle with the Schropp calibration.

Vehicle application

• 2015–2020 Ford Mustang Shelby GT350
• 5.2 litre V8

Scope of delivery

• JLT Cold Air Intake CAI-GT350-15
• black rotomolded JLT intake tube
• large red oiled air filter with 5-inch opening
• JLT heat shield
• required JLT intake system components
• Schropp Custom Tune for the vehicle and JLT Cold Air Intake
• SCT X4 programmer when selecting the “incl. SCT X4” version

SCT X4 functions

• Transfer of the Schropp Custom Tune to the vehicle
• Factory calibration saved during initial programming
• Ability to return the vehicle to its stock calibration
• Read and clear diagnostic trouble codes (DTCs)
• Data logging